/* -----------------------------------------------------------------------------
   Trigger button
   ----------------------------------------------------------------------------- */

.if-datepicker {
    position: relative;
    display: inline-block;
    width: 100%;
    max-width: 280px;
}

.if-datepicker__trigger {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 10px var(--space-4);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--text-light);
    cursor: pointer;
    text-align: left;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

    .if-datepicker__trigger:hover {
        border-color: var(--primary);
    }

    .if-datepicker__trigger.active {
        border-color: var(--primary);
        box-shadow: 0 0 0 3px var(--primary-light);
    }

    .if-datepicker__trigger > .fa-calendar-alt {
        color: var(--primary);
        font-size: .85rem;
        flex-shrink: 0;
    }

.if-datepicker__label--set {
    color: var(--text-dark);
    font-weight: 500;
}

.if-datepicker__arrow {
    margin-left: auto;
    font-size: .65rem;
    color: var(--text-light);
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

.if-datepicker.open .if-datepicker__arrow {
    transform: rotate(180deg);
    color: var(--primary);
}

/* -----------------------------------------------------------------------------
   Panel — dropdown calendar
   ----------------------------------------------------------------------------- */

.if-datepicker__panel {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    z-index: 200;
    width: 280px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
    overflow: hidden;
    /* max-height accordion — compatible with all browsers and Safari */
    max-height: 0;
    opacity: 0;
    transition: max-height 0.22s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.18s ease;
    pointer-events: none;
}

.if-datepicker.open .if-datepicker__panel {
    max-height: 400px;
    opacity: 1;
    pointer-events: auto; /* 'all' is invalid — 'auto' is correct */
}

.if-datepicker__panel-inner {
    overflow: hidden;
}

/* -----------------------------------------------------------------------------
   Header — month navigation
   ----------------------------------------------------------------------------- */

.if-datepicker__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.if-datepicker__month-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-dark);
}

.if-datepicker__nav {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-medium);
    font-size: .65rem;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

    .if-datepicker__nav:hover {
        background: var(--primary-light);
        border-color: var(--primary);
        color: var(--primary);
    }

/* -----------------------------------------------------------------------------
   Weekday labels
   ----------------------------------------------------------------------------- */

.if-datepicker__weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    padding: var(--space-2) var(--space-3) 0;
}

    .if-datepicker__weekdays span {
        text-align: center;
        font-size: .65rem;
        font-weight: 600;
        color: var(--text-light);
        text-transform: uppercase;
        letter-spacing: .04em;
        padding: var(--space-1) 0;
    }

/* -----------------------------------------------------------------------------
   Day grid
   ----------------------------------------------------------------------------- */

.if-datepicker__grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    padding: var(--space-2) var(--space-3) var(--space-3);
}

    .if-datepicker__grid span {
        display: flex;
        align-items: center;
        justify-content: center;
        height: 32px;
        border-radius: var(--radius-sm);
        font-size: var(--font-size-xs);
        font-weight: 500;
        color: var(--text-dark);
        cursor: pointer;
        transition: background 0.14s ease, color 0.14s ease;
        -webkit-user-select: none;
        user-select: none;
    }

        .if-datepicker__grid span:not(.dp-empty):not(.dp-disabled):hover {
            background: var(--primary-light);
            color: var(--primary);
        }

.dp-empty {
    cursor: default !important;
}

.dp-today {
    background: var(--bg-secondary);
    font-weight: 700;
    color: var(--primary) !important;
    /* rgba fallback for browsers without color-mix */
    border: 1px solid rgba(0, 98, 255, 0.25);
    border: 1px solid color-mix(in srgb, var(--primary) 25%, transparent);
}

.dp-disabled {
    color: var(--text-light) !important;
    opacity: 0.4;
    cursor: not-allowed !important;
    pointer-events: none;
}

.dp-selected {
    background: var(--primary) !important;
    color: white !important;
    font-weight: 600;
    /* rgba fallback for browsers without color-mix */
    box-shadow: 0 2px 6px rgba(0, 98, 255, 0.35);
    box-shadow: 0 2px 6px color-mix(in srgb, var(--primary) 35%, transparent);
}

/* -----------------------------------------------------------------------------
   Footer — clear / today
   ----------------------------------------------------------------------------- */

.if-datepicker__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-4) var(--space-3);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.if-datepicker__clear,
.if-datepicker__today {
    background: transparent;
    border: none;
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: background 0.14s ease, color 0.14s ease;
}

.if-datepicker__clear {
    color: var(--text-light);
}

    .if-datepicker__clear:hover {
        background: var(--bg-tertiary);
        color: var(--text-dark);
    }

.if-datepicker__today {
    color: var(--primary);
    font-weight: 600;
}

    .if-datepicker__today:hover {
        background: var(--primary-light);
    }

/* -----------------------------------------------------------------------------
   Responsive
   ----------------------------------------------------------------------------- */

@media (max-width: 640px) {
    .if-datepicker {
        max-width: 100%;
    }

    .if-datepicker__panel {
        width: 100%;
        left: 0;
        right: 0;
    }
}